1 /* $NetBSD: main.c,v 1.2 2010/12/08 09:43:28 wiz Exp $ */ 2 3 /*- 4 * Copyright (c) 2010 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Mihai Chelaru <kefren@NetBSD.org> 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <netinet/in.h> 33 #include <sys/stat.h> 34 #include <sys/socket.h> 35 #include <sys/select.h> 36 #include <arpa/inet.h> 37 38 #include <stdio.h> 39 #include <stdlib.h> 40 #include <strings.h> 41 #include <unistd.h> 42 43 #include "ldp.h" 44 #include "ldp_command.h" 45 #include "socketops.h" 46 #include "tlv.h" 47 #include "pdu.h" 48 #include "fsm.h" 49 #include "ldp_errors.h" 50 #include "mpls_interface.h" 51 52 extern int ls; /* TCP listening socket */ 53 extern int dont_catch; 54 extern int command_port; 55 extern int command_socket; 56 57 extern int debug_f, warn_f, syslog_f; 58 59 extern struct sockaddr mplssockaddr; 60 61 void print_usage(char *myself) 62 { 63 printf("\nUsage: %s [-DdfhW] [-p PORT]\n\n", myself); 64 } 65 66 int 67 main(int argc, char *argv[]) 68 { 69 int ch, forkres, dontfork = 0; 70 71 while((ch = getopt(argc, argv, "dDfhp:W")) != -1) 72 switch(ch) { 73 case 'D': 74 debug_f = 1; 75 break; 76 case 'd': 77 dont_catch = 1; 78 break; 79 case 'f': 80 dontfork = 1; 81 break; 82 case 'p': 83 if ((command_port = atoi(optarg)) < 1) { 84 print_usage(argv[0]); 85 return -1; 86 } 87 break; 88 case 'W': 89 warn_f = 1; 90 break; 91 case 'h': 92 default: 93 print_usage(argv[0]); 94 return -1; 95 break; 96 } 97 if (geteuid()) { 98 fatalp("You have to run this as ROOT\n"); 99 return -1; 100 } 101 if (set_my_ldp_id()) { 102 fatalp("Cannot set LDP ID\n"); 103 return -1; 104 } 105 if (mplssockaddr.sa_len == 0) { 106 fatalp("You need one mpls interface up and an IP " 107 "address set for it\n"); 108 return -1; 109 } 110 if (mpls_start_ldp() == -1) 111 return -1; 112 if (!strcmp(LDP_ID, "0.0.0.0")) { 113 fatalp("Cannot set my LDP ID.\nAre you sure you've " 114 "got a non-loopback INET interface UP ?\n"); 115 return -1; 116 } 117 init_command_sockets(); 118 if ((command_socket = create_command_socket(command_port)) < 1) { 119 fatalp("Cannot create command socket\n"); 120 return -1; 121 } 122 if (create_hello_socket() < 1) { 123 fatalp("Cannot create hello socket\n"); 124 return -1; 125 } 126 127 ls = create_listening_socket(); 128 129 if (ls < 0) { 130 fatalp("Cannot create listening socket\n"); 131 return -1; 132 } 133 134 if (dontfork == 1) 135 the_big_loop(); 136 137 forkres = fork(); 138 if (forkres == 0) { 139 syslog_f = 1; 140 the_big_loop(); 141 } 142 if (forkres < 0) 143 perror("fork"); 144 145 return 0; 146 } 147